The pulse position modulation (PPM) technique is widely used in the field of ultra-wideband wireless digital communication.
时间脉冲位置调制(PPM)技术在超宽带无线数字通信领域得到了广泛应用。
2
High electron mobility transistors (HEMT) is one of field effect transistors, which is made by modulation doped heterostructure technology and possess super high electron mobility.
高电子迁移率晶体管(HEMT)是利用异质结和调制掺杂技术制成的具有超高迁移率的场效应晶体管。
3
And the techniques of double-slit filter and "cross-filter" can be used to extract the near field wavefront of the laser beam with phase modulation and amplitude fluctuation.